Lebanon's Top 2% Scientists 2021

Lebanon has 67 scientists on the 2021 single-year Top 2% list, up 19.6% from 56 in 2020. That places Lebanon 61st in the world by number of listed scientists, down 4 places. American University of Beirut has the most listed scientists (32), followed by American University of Beirut Medical Center (7).

Single Year

+11 (+19.6%) vs 2020

Career Data

+11 (+22.9%) vs 2020

World rank by count

#61

down 4 places vs 2020

Institutes

No change vs 2020

Scientists in Lebanon on the list, by year

The single-year count has grown 20% since 2020.

Single-year list, change on the previous year

2021+19.6%

2022+6.0%

2023+1.4%

2024+45.8%

2025-6.7%

Show the numbers

Year	Single Year	Change	Career Data	Change
2020	56		48
2021	67	+19.6%	59	+22.9%
2022	71	+6.0%	62	+5.1%
2023	72	+1.4%	62	+0.0%
2024	105	+45.8%	78	+25.8%
2025	98	-6.7%	92	+17.9%

Top 10 institutes in Lebanon

By number of listed scientists

Single-year list2021

Show the list

All 67 scientists

Single-year list2021

Everyone on the list, free to browse.

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Rank in Lebanon	World rank	Scientist	Institute	Sub-field	Rank in sub-field
1	3,197	JD Jamali, Dima	Suliman S. Olayan School of Business	Business & Management	Rank 72
2	4,543	BE Bouri, Elie	Adnan Kassar School of Business	Finance	Rank 22
3	7,138	JR Jabr, Rabih A.	American University of Beirut	Energy	Rank 145
4	14,520	AE Akl, Elie A.	American University of Beirut	General & Internal Medicine	Rank 179
5	21,277	KJ Khatib, Jamal M.	Beirut Arab University	Building & Construction	Rank 112
6	29,939	DA Dietrich, Arne	American University of Beirut	Experimental Psychology	Rank 442
7	30,216	OC Obermeyer, Carla Makhlouf	American University of Beirut	Public Health	Rank 308
8	33,281	GA Ghauch, Antoine	American University of Beirut	Environmental Sciences	Rank 396
9	34,669	SA Shihadeh, Alan	American University of Beirut	Public Health	Rank 363
10	42,045	FM Fakhoury, Marc	Lebanese American University	Neurology & Neurosurgery	Rank 2,317
11	44,392	HM Harajli, Mohamad	American University of Beirut	Civil Engineering	Rank 166
12	45,253	AR Asmar, Roland	Foundation-Medical Research Institutes	Cardiovascular System & Hematology	Rank 1,285
13	51,287	AG Assaker, Guy	Adnan Kassar School of Business	Sport, Leisure & Tourism	Rank 191
14	52,262	ZF Ziyadeh, Fuad N.	American University of Beirut	Urology & Nephrology	Rank 383
15	55,683	ML Meho, L.	American University of Beirut	Information & Library Sciences	Rank 41
16	56,419	AJ Assaad, Joseph J.	University of Balamand	Building & Construction	Rank 297
17	58,497	SA Sibai, Abla M.	American University of Beirut	General & Internal Medicine	Rank 679
18	58,559	CA Chamseddine, Ali H.	American University of Beirut	Nuclear & Particle Physics	Rank 731
19	59,713	EM El-Fadel, Mutasem	American University of Beirut	Environmental Sciences	Rank 740
20	61,397	AB Atiyeh, Bishara S.	American University of Beirut Medical Center	Surgery	Rank 304
21	62,296	KE Karam, Elie G.	Saint George Hospital University Medical Center	Psychiatry	Rank 1,099
22	62,670	TA Taher, Ali	American University of Beirut Medical Center	Immunology	Rank 1,426
23	62,874	OI Osman, Ibrahim H.	Suliman S. Olayan School of Business	Operations Research	Rank 342
24	63,737	EF El-Hajj Fuleihan, Ghada	American University of Beirut Medical Center	Endocrinology & Metabolism	Rank 1,114
25	70,492	HJ Haddad, John J.	Beirut Arab University	Biochemistry & Molecular Biology	Rank 1,595
26	72,901	HN Hawi, Nazir	Notre Dame University, Lebanon	Education	Rank 638
27	86,494	YK Yammine, Kaissar	Lebanese American University Medical Center-Rizk Hospital	Orthopedics	Rank 531
28	86,852	EF El-Jardali, Fadi	American University of Beirut	Health Policy & Services	Rank 242
29	91,795	SS Saab, Samer S.	Lebanese American University	Industrial Engineering & Automation	Rank 825
30	97,826	SY Sidani, Yusuf M.	Suliman S. Olayan School of Business	Business & Management	Rank 1,769
31	99,122	KS Kadry, Seifedine	Beirut Arab University	Artificial Intelligence & Image Processing	Rank 2,221
32	102,516	KV Khamis, Vivian	American University of Beirut	Education	Rank 946
33	102,679	AW Ammar, Walid	Ministry of Public Health, Lebanon	General & Internal Medicine	Rank 1,078
34	102,971	MA Mansour, Ahmad M.	American University of Beirut	Ophthalmology & Optometry	Rank 576
35	110,367	GH Gali-Muhtasib, Hala	American University of Beirut	Oncology & Carcinogenesis	Rank 3,932
36	111,829	PD Patra, Digambara	American University of Beirut	Analytical Chemistry	Rank 801
37	112,861	GN Ghaddar, Nesreen	American University of Beirut	Building & Construction	Rank 594
38	114,117	SP Salameh, Pascale	Université Libanaise	General & Internal Medicine	Rank 1,171
39	125,690	TY Tawk, Youssef	American University of Beirut	Networking & Telecommunications	Rank 1,080
40	128,569	BA Bazarbachi, Ali	American University of Beirut Medical Center	Immunology	Rank 2,730
41	147,844	HW Habchi, W.	Lebanese American University	Mechanical Engineering & Transports	Rank 1,374
42	149,283	HN Hwalla, Nahla	American University of Beirut	Nutrition & Dietetics	Rank 1,013
43	155,116	KR Khishfe, Rola	American University of Beirut	Education	Rank 1,473
44	163,654	BM Bariche, Michel	American University of Beirut	Marine Biology & Hydrobiology	Rank 1,188
45	179,753	MR Mohtar, Rabi H.	American University of Beirut	Agronomy & Agriculture	Rank 1,236
46	181,874	TH Tamim, Hani	American University of Beirut Medical Center	Emergency & Critical Care Medicine	Rank 586
47	183,893	IA Ibrahim, Amr	Beirut Arab University	Energy	Rank 4,360
48	196,265	YA Yassine, Ali	American University of Beirut	Design Practice & Management	Rank 129
49	208,278	AC Abou-Rjeily, Chadi	Lebanese American University	Networking & Telecommunications	Rank 1,929
50	211,476	KM Khabbaz, Maurice	Notre Dame University, Lebanon	Networking & Telecommunications	Rank 1,964
51	214,602	JI Jawhar, Imad	Al Maaref University	Networking & Telecommunications	Rank 2,005
52	220,993	SI Saoud, I. Patrick	American University of Beirut	Fisheries	Rank 643
53	221,864	HM Hmadeh, Mohamad	American University of Beirut	Inorganic & Nuclear Chemistry	Rank 1,234
54	226,765	AO Abbas, Ossama	American University of Beirut Medical Center	Dermatology & Venereal Diseases	Rank 908
55	229,456	AM Al-Alaoui, Mohamad Adnan	American University of Beirut	Electrical & Electronic Engineering	Rank 834
56	231,369	MS Matar, Samir F.	Lebanese German University	Inorganic & Nuclear Chemistry	Rank 1,305
57	242,004	EH El Haj Hassan, Fouad	Université Libanaise	Applied Physics	Rank 5,479
58	244,263	SM Seoud, Muheiddine	American University of Beirut Medical Center	Obstetrics & Reproductive Medicine	Rank 1,692
59	247,831	AH Abu-Saad Huijer, Huda	American University of Beirut	Nursing	Rank 846
60	278,444	AB Abboud, Bassam	Université Libanaise	General & Internal Medicine	Rank 2,682
61	283,602	GH Greige-Gerges, Hélène	Université Libanaise	Pharmacology & Pharmacy	Rank 2,312
62	316,698	DZ Dawy, Zaher	American University of Beirut	Networking & Telecommunications	Rank 3,130
63	320,077	EM Elkhoury, M.	Lebanese American University	Aerospace & Aeronautics	Rank 590
64	352,459	CJ Costantine, Joseph	American University of Beirut	Networking & Telecommunications	Rank 3,542
65	478,153	FA Fardoun, Abbas Ahmad	Al Mareef University	Electrical & Electronic Engineering	Rank 2,016
66	548,573	MM Mansour, Mohammad M.	American University of Beirut	Networking & Telecommunications	Rank 5,912
67	598,136	NH Noura, Hassan N.	American University of Beirut	Networking & Telecommunications	Rank 6,532
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Frequently asked questions

How many scientists from Lebanon are in the 2021 Stanford Top 2% list?

67 scientists affiliated with Lebanon are on the 2021 single-year list, and 59 are on the career-long list.

Which institute in Lebanon has the most Top 2% scientists?

On the 2021 single-year list, American University of Beirut has the most listed scientists from Lebanon, with 32. It is followed by American University of Beirut Medical Center with 7.

How has the number of Top 2% scientists in Lebanon changed since 2020?

On the single-year list, Lebanon went from 56 scientists in 2020 to 67 in 2021, a change of +19.6%.

What is the difference between the single-year and career-long lists?

The single-year list ranks scientists on the citations their work received in one year. The career-long list ranks them on citations across their whole career. Both lists are published every year, and a scientist can be on one, both or neither.

What is the official source of this data?

The rankings come from the science-wide author databases of standardized citation indicators published by Ioannidis et al. in the Elsevier Data Repository, updated every year. TOPSCINET, an independent platform, organises that data by country, year, institute and field, so you can compare and explore it.